* [GIT PULL] RCU updates for v5.1
@ 2019-03-05 12:03 Ingo Molnar
2019-03-05 23:15 ` pr-tracker-bot
2019-03-06 2:13 ` Linus Torvalds
0 siblings, 2 replies; 6+ messages in thread
From: Ingo Molnar @ 2019-03-05 12:03 UTC (permalink / raw)
To: Linus Torvalds
Cc: linux-kernel, Paul E. McKenney, Thomas Gleixner, Peter Zijlstra,
Andrew Morton
Linus,
Please pull the latest core-rcu-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus
# HEAD: cae45e1c6c541283a1bd155aa7b0a57e353b4df4 Merge branch 'rcu-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
The main RCU related changes in this cycle were:
- Additional cleanups after RCU flavor consolidation
- Grace-period forward-progress cleanups and improvements
- Documentation updates
- Miscellaneous fixes
- spin_is_locked() conversions to lockdep
- SPDX changes to RCU source and header files
- SRCU updates
- Torture-test updates, including nolibc updates and moving
nolibc to tools/include
Thanks,
Ingo
------------------>
Andrea Parri (1):
tools/memory-model: Model smp_mb__after_unlock_lock()
Joel Fernandes (Google) (1):
rcu: Add sparse check to rcu_assign_pointer()
Junchang Wang (2):
doc: Fix outdated links
RCU/torture.txt: Remove section MODULE PARAMETERS
Paul E. McKenney (59):
tools/memory-model: Add scripts to check github litmus tests
tools/memory-model: Make scripts take "-j" abbreviation for "--jobs"
sched: Replace call_rcu_sched() with call_rcu()
sched: Replace synchronize_sched() with synchronize_rcu()
rcu: Rename and comment changes due to only one rcuo kthread per CPU
rcu: Make expedited IPI handler return after handling critical section
rcu: Inline force_quiescent_state() into rcu_force_quiescent_state()
rcu: Eliminate RCU_BH_FLAVOR and RCU_SCHED_FLAVOR
rcu: Inline rcu_kthread_do_work() into its sole remaining caller
rcu: Determine expedited-GP IPI handler at build time
rcu: Consolidate PREEMPT and !PREEMPT synchronize_rcu_expedited()
rcu: Consolidate PREEMPT and !PREEMPT synchronize_rcu()
rcu: Inline _synchronize_rcu_expedited() into synchronize_rcu_expedited()
rcu: Discard separate per-CPU callback counts
rcu: Remove wrapper definitions for obsolete RCU update functions
rcu: Accommodate zero jiffies_till_first_fqs and kthread kicking
rcu: Move rcu_cpu_kthread_task to rcu_data structure
rcu: Move rcu_cpu_kthread_status to rcu_data structure
rcu: Remove unused rcu_cpu_kthread_loops per-CPU variable
rcu: Move rcu_cpu_has_work to rcu_data structure
rcu: Remove unused rcu_cpu_kthread_cpu per-CPU variable
rcu: Update NOCB comments
rcu: Improve diagnostics for failed RCU grace-period start
rcu: Protect rcu_check_gp_kthread_starvation() access to ->gp_flags
rcu: Add sysrq rcu_node-dump capability
doc: Now jiffies_till_sched_qs solicits help from cond_resched()
doc: CPU-hotplug notifiers cannot invoke synchronize_srcu() or srcu_barrier()
rcu: Docbook for rcu_head_init() and rcu_head_after_call_rcu()
rcu: Rename rcu_check_callbacks() to rcu_sched_clock_irq()
rcu: Rename rcu_process_callbacks() to rcu_core() for Tree RCU
rcu: Remove preemption disabling from expedited CPU selection
rcu: Repair rcu_nmi_exit() docbook header
rcu: Fix obsolete DYNTICK_IRQ_NONIDLE comment
include/asm-generic: Remove spin_is_locked() comment
virt/kvm: Replace spin_is_locked() with lockdep
srcu: Check for invalid idx argument in srcu_read_unlock()
rcutorture: Record grace periods in forward-progress histogram
torture: Explain and simplify odd "for" loop in mkinitrd.sh
rcutorture: Add grace period after CPU offline
rcuperf: Stop abusing IS_ENABLED()
rcu/rcu.h: Convert to SPDX license identifier
rcu/rcuperf: Convert to SPDX license identifier
rcu/rcu_segcblist: Convert to SPDX license identifier
rcu/rcutorture: Convert to SPDX license identifier
rcu/srcu: Convert to SPDX license identifier
rcu/sync: Convert to SPDX license identifier
rcu/tiny: Convert to SPDX license identifier
rcu/tree: Convert to SPDX license identifier
rcu/update: Convert to SPDX license identifier
linux/rcu_node_tree: Convert to SPDX license identifier
linux/rcupdate: Convert to SPDX license identifier
linux/rcu_segcblist: Convert to SPDX license identifier
linux/rcu_sync: Convert to SPDX license identifier
linux/rcutiny: Convert to SPDX license identifier
linux/rcutree: Convert to SPDX license identifier
linux/srcu: Convert to SPDX license identifier
torture: Convert to SPDX license identifier
linux/torture: Convert to SPDX license identifier
locking/locktorture: Convert to SPDX license identifier
Sebastian Andrzej Siewior (1):
srcu: Remove srcu_queue_delayed_work_on()
Willy Tarreau (5):
rcutorture/nolibc: Fix the clobbered registers in the MIPS syscall definition
rcutorture/nolibc: Fix some poor indentation and alignment
rcutorture/nolibc: Add a bit of documentation to explain how to use nolibc
tools headers: Move the nolibc header from rcutorture to tools/include/nolibc/
MAINTAINERS: Add myself as the maintainer for the nolibc header file(s)
Zhang, Jun (2):
rcu: Do RCU GP kthread self-wakeup from softirq and interrupt
rcu: Prevent needless ->gp_seq_needed update in __note_gp_changes()
.../Expedited-Grace-Periods/ExpSchedFlow.svg | 18 +-
.../Expedited-Grace-Periods.html | 26 +-
.../Memory-Ordering/Tree-RCU-Memory-Ordering.html | 6 +-
.../TreeRCU-callback-invocation.svg | 2 +-
.../RCU/Design/Memory-Ordering/TreeRCU-gp.svg | 8 +-
.../RCU/Design/Memory-Ordering/TreeRCU-qs.svg | 6 +-
.../RCU/Design/Requirements/Requirements.html | 20 +-
Documentation/RCU/stallwarn.txt | 15 +-
Documentation/RCU/torture.txt | 169 +------------
Documentation/RCU/whatisRCU.txt | 4 +-
Documentation/admin-guide/kernel-parameters.txt | 32 ++-
MAINTAINERS | 6 +
include/asm-generic/bug.h | 3 -
include/linux/rcu_node_tree.h | 17 +-
include/linux/rcu_segcblist.h | 17 +-
include/linux/rcu_sync.h | 15 +-
include/linux/rcupdate.h | 91 +------
include/linux/rcutiny.h | 17 +-
include/linux/rcutree.h | 19 +-
include/linux/srcu.h | 18 +-
include/linux/srcutiny.h | 17 +-
include/linux/srcutree.h | 20 +-
include/linux/torture.h | 20 +-
kernel/locking/locktorture.c | 21 +-
kernel/rcu/rcu.h | 21 +-
kernel/rcu/rcu_segcblist.c | 17 +-
kernel/rcu/rcu_segcblist.h | 17 +-
kernel/rcu/rcuperf.c | 27 +--
kernel/rcu/rcutorture.c | 59 +++--
kernel/rcu/srcutiny.c | 17 +-
kernel/rcu/srcutree.c | 72 ++----
kernel/rcu/sync.c | 15 +-
kernel/rcu/tiny.c | 19 +-
kernel/rcu/tree.c | 267 +++++++++++++--------
kernel/rcu/tree.h | 53 ++--
kernel/rcu/tree_exp.h | 201 ++++++----------
kernel/rcu/tree_plugin.h | 238 +++++-------------
kernel/rcu/update.c | 17 +-
kernel/sched/cpufreq.c | 4 +-
kernel/sched/cpufreq_schedutil.c | 2 +-
kernel/sched/sched.h | 2 +-
kernel/sched/topology.c | 4 +-
kernel/time/timer.c | 2 +-
kernel/torture.c | 25 +-
.../rcutorture/bin => include/nolibc}/nolibc.h | 118 +++++++--
tools/memory-model/.gitignore | 1 +
tools/memory-model/README | 2 +
tools/memory-model/linux-kernel.bell | 3 +-
tools/memory-model/linux-kernel.cat | 4 +-
tools/memory-model/linux-kernel.def | 1 +
tools/memory-model/scripts/README | 70 ++++++
tools/memory-model/scripts/checkalllitmus.sh | 53 ++--
tools/memory-model/scripts/checkghlitmus.sh | 65 +++++
tools/memory-model/scripts/checklitmus.sh | 74 +-----
tools/memory-model/scripts/checklitmushist.sh | 60 +++++
tools/memory-model/scripts/cmplitmushist.sh | 87 +++++++
tools/memory-model/scripts/initlitmushist.sh | 68 ++++++
tools/memory-model/scripts/judgelitmus.sh | 78 ++++++
tools/memory-model/scripts/newlitmushist.sh | 61 +++++
tools/memory-model/scripts/parseargs.sh | 136 +++++++++++
tools/memory-model/scripts/runlitmushist.sh | 87 +++++++
tools/testing/selftests/rcutorture/bin/mkinitrd.sh | 27 ++-
virt/kvm/kvm_main.c | 2 +-
63 files changed, 1395 insertions(+), 1268 deletions(-)
rename tools/{testing/selftests/rcutorture/bin => include/nolibc}/nolibc.h (94%)
create mode 100644 tools/memory-model/.gitignore
create mode 100644 tools/memory-model/scripts/README
create mode 100644 tools/memory-model/scripts/checkghlitmus.sh
create mode 100644 tools/memory-model/scripts/checklitmushist.sh
create mode 100644 tools/memory-model/scripts/cmplitmushist.sh
create mode 100644 tools/memory-model/scripts/initlitmushist.sh
create mode 100644 tools/memory-model/scripts/judgelitmus.sh
create mode 100644 tools/memory-model/scripts/newlitmushist.sh
create mode 100644 tools/memory-model/scripts/parseargs.sh
create mode 100644 tools/memory-model/scripts/runlitmushist.sh
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] RCU updates for v5.1
2019-03-05 12:03 [GIT PULL] RCU updates for v5.1 Ingo Molnar
@ 2019-03-05 23:15 ` pr-tracker-bot
2019-03-06 2:13 ` Linus Torvalds
1 sibling, 0 replies; 6+ messages in thread
From: pr-tracker-bot @ 2019-03-05 23:15 UTC (permalink / raw)
To: Ingo Molnar
Cc: Linus Torvalds, linux-kernel, Paul E. McKenney, Thomas Gleixner,
Peter Zijlstra, Andrew Morton
The pull request you sent on Tue, 5 Mar 2019 13:03:01 +0100:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/3717f613f48df0222311f974cf8a06c8a6c97bae
Thank you!
--
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] RCU updates for v5.1
2019-03-05 12:03 [GIT PULL] RCU updates for v5.1 Ingo Molnar
2019-03-05 23:15 ` pr-tracker-bot
@ 2019-03-06 2:13 ` Linus Torvalds
2019-03-06 7:08 ` Ingo Molnar
1 sibling, 1 reply; 6+ messages in thread
From: Linus Torvalds @ 2019-03-06 2:13 UTC (permalink / raw)
To: Ingo Molnar
Cc: Linux List Kernel Mailing, Paul E. McKenney, Thomas Gleixner,
Peter Zijlstra, Andrew Morton
On Tue, Mar 5, 2019 at 4:03 AM Ingo Molnar <mingo@kernel.org> wrote:
>
> Please pull the latest core-rcu-for-linus git tree from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus
Hmm. I think this made my build time explode.
I'm bisecting, but it looks like my allmodconfig builds went from ~31
min to ~39 min with this pull.
NOTE! I'm not saying that the kernel slowed down. Just the *build*
(with the same kernel) slowed down.
It's odd, and maybe I did something wrong, so I'll have to
double-check the numbers, but I thought I'd mention it in case
somebody goes "Ahh, I did X to the include files, so now every
compiler invocation probably sees all of xyz and that will slow things
down enormously".
Linus
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] RCU updates for v5.1
2019-03-06 2:13 ` Linus Torvalds
@ 2019-03-06 7:08 ` Ingo Molnar
2019-03-06 14:42 ` Linus Torvalds
0 siblings, 1 reply; 6+ messages in thread
From: Ingo Molnar @ 2019-03-06 7:08 UTC (permalink / raw)
To: Linus Torvalds
Cc: Linux List Kernel Mailing, Paul E. McKenney, Thomas Gleixner,
Peter Zijlstra, Andrew Morton
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Tue, Mar 5, 2019 at 4:03 AM Ingo Molnar <mingo@kernel.org> wrote:
> >
> > Please pull the latest core-rcu-for-linus git tree from:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus
>
> Hmm. I think this made my build time explode.
>
> I'm bisecting, but it looks like my allmodconfig builds went from ~31
> min to ~39 min with this pull.
>
> NOTE! I'm not saying that the kernel slowed down. Just the *build*
> (with the same kernel) slowed down.
>
> It's odd, and maybe I did something wrong, so I'll have to
> double-check the numbers, but I thought I'd mention it in case
> somebody goes "Ahh, I did X to the include files, so now every
> compiler invocation probably sees all of xyz and that will slow things
> down enormously".
Could it be the locking tree?
In particular the atomics auto-generation slowed down the build before,
but this build regression was thought to be fixed with:
0cf264b3133d: locking/atomics: Check atomic headers with sha1sum
but maybe that's not the whole story?
Or it's an unreported slowdown related to the RCU tree, as you say.
Thanks,
Ingo
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] RCU updates for v5.1
2019-03-06 7:08 ` Ingo Molnar
@ 2019-03-06 14:42 ` Linus Torvalds
2019-03-06 16:32 ` Paul E. McKenney
0 siblings, 1 reply; 6+ messages in thread
From: Linus Torvalds @ 2019-03-06 14:42 UTC (permalink / raw)
To: Ingo Molnar
Cc: Linux List Kernel Mailing, Paul E. McKenney, Thomas Gleixner,
Peter Zijlstra, Andrew Morton
On Tue, Mar 5, 2019 at 11:08 PM Ingo Molnar <mingo@kernel.org> wrote:
>
>
> * Linus Torvalds <torvalds@linux-foundation.org> wrote:
> >
> > Hmm. I think this made my build time explode.
>
> Could it be the locking tree?
No, I hadn't pulled that yet.
And it looks like it was a false alarm anyway. Sorry for the noise.
Linus
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] RCU updates for v5.1
2019-03-06 14:42 ` Linus Torvalds
@ 2019-03-06 16:32 ` Paul E. McKenney
0 siblings, 0 replies; 6+ messages in thread
From: Paul E. McKenney @ 2019-03-06 16:32 UTC (permalink / raw)
To: Linus Torvalds
Cc: Ingo Molnar, Linux List Kernel Mailing, Thomas Gleixner,
Peter Zijlstra, Andrew Morton
On Wed, Mar 06, 2019 at 06:42:30AM -0800, Linus Torvalds wrote:
> On Tue, Mar 5, 2019 at 11:08 PM Ingo Molnar <mingo@kernel.org> wrote:
> >
> >
> > * Linus Torvalds <torvalds@linux-foundation.org> wrote:
> > >
> > > Hmm. I think this made my build time explode.
> >
> > Could it be the locking tree?
>
> No, I hadn't pulled that yet.
>
> And it looks like it was a false alarm anyway. Sorry for the noise.
Whew!!! ;-)
Thanx, Paul
^ permalink raw reply [flat|nested] 6+ messages in thread
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2019-03-05 12:03 [GIT PULL] RCU updates for v5.1 Ingo Molnar
2019-03-05 23:15 ` pr-tracker-bot
2019-03-06 2:13 ` Linus Torvalds
2019-03-06 7:08 ` Ingo Molnar
2019-03-06 14:42 ` Linus Torvalds
2019-03-06 16:32 ` Paul E. McKenney
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